Red Stains and Dyes and Indicators

Congo Red, Biological Stain, pH Indicator Products for Science Education

Chemical Name or Material: Congo Red, Biological Stain, pH Indicator CAS: 573-58-0 Molecular Formula: C32H22N6Na2O6S2 Linear Formula: C32H22N6Na2O6S2 Formula Weight: 696.67 Synonym: C.I. Direct Red 28

Erythrosin B, pure, high purity, biological stain, ACROS Organics™

Chemical Name or Material: Erythrosin B CAS: 16423-68-0 Purity Grade: Pure Molecular Formula: C20H6I4Na2O5 Formula Weight: 879.85 MDL Number: MFCD00144257 Synonym: Acid Red 51

Phenol Red, Indicator, ACROS Organics™

Chemical Name or Material: Phenol Red CAS: 143-74-8 Purity Grade: Extra Pure Molecular Formula: C19H14O5S Formula Weight: 354.38 MDL Number: MFCD00003552 Synonym: Phenolsulfonephthalein

Congo Red, 0.1% Aqueous Solution Products for Science Education

Chemical Name or Material: Congo Red, 0.1% Aqueous Solution CAS: 573-58-0 CAS: 7732-18-5 Assay Percent Range: <1% w/v

MethyleRed, 0.02% W/v Solution in Methanol, ACROS Organics™

Chemical Name or Material: MethyleRed CAS: 845-10-3 Molecular Formula: C15H14N3NaO2 Linear Formula: (CH3)2NC6H4N=NC6H4CO2Na Formula Weight: 291.29 MDL Number: MFCD00002426 Synonym: 2-[4-(Dimethylamino)phenylazo]benzoic acid, sodium salt

Phenol Red sodium salt, ACS reagent, ACROS Organics™

Chemical Name or Material: Phenol Red sodium salt CAS: 34487-61-1 Purity Grade: ACS Reagent Grade Molecular Formula: C19H13NaO5S Formula Weight: 376.35 MDL Number: MFCD00066901

Methyl Red, sodium salt, indicator, pure, ACROS Organics™

Chemical Name or Material: Methyl Red, sodium salt Name Note: pure CAS: 845-10-3 Purity Grade: Extra Pure Molecular Formula: C15H14N3NaO2 Linear Formula: (CH3)2NC6H4N=NC6H4CO2Na Formula Weight: 291.27 MDL Number: MFCD00002426 Synonym: 2-[4-(Dimethylamino)phenylazo]benzoic acid, sodium salt

Ruthenium Red tetrahydrate, pure, ACROS Organics™ Available on GSA/VA Contract for Federal Government customers only.

Chemical Name or Material: Ruthenium red tetrahydrate Name Note: Pure CAS: 12790-48-6 Purity Grade: Extra Pure Assay: 34.6 to 36.1% (ruthenium) Molecular Formula: Cl6H42N14O2Ru3·4H2O Linear Formula: {(NH3)5Ruoru(NH3)4oru(NH3)5}Cl6·4H2O Formula Weight: 858.35 MDL Number: MFCD00167176

Sudan Red 7B, ACROS Organics™ Available on GSA/VA Contract for Federal Government customers only.

Chemical Name or Material: Sudan red 7B CAS: 6368-72-5 Molecular Formula: C24H21N5 Formula Weight: 379.45 MDL Number: MFCD00003904 Synonym: C.I. 26050

Methyl Red, ACS, Alfa Aesar™

Chemical Name or Material: Methyl Red Name Note: For analysis ACS CAS: 493-52-7 Purity Grade: ACS Grade Physical Form: Crystalline Molecular Formula: C15H15N3O2 Formula Weight: 269.3 MDL Number: MFCD00002425 Synonym: C.I. 13020

Erythrosin B

Chemical Name or Material: Erythrosin B CAS: 568-63-8 Molecular Formula: C20H6I4Na2O5 Formula Weight: 879.87 MDL Number: MFCD00144257

Congo Red (Certified Biological Stain), Fisher Chemical

Chemical Name or Material: Congo Red CAS: 573-58-0 Purity Grade: Certified Biological Stain Molecular Formula: C32 H22N6Na2O6S2 Formula Weight: 696.65 Synonym: Diphenyl Bisazonaphthionic Acid

Neutral Red, ACROS Organics™

Chemical Name or Material: Neutral Red Name Note: Pure CAS: 553-24-2 Purity Grade: Extra Pure Molecular Formula: C15H17ClN4 Formula Weight: 288.77 MDL Number: MFCD00012651 Synonym: 3-Amino-7-dimethylamino-2-methylphenazine hydrochloride

Methyl Red Sodium Salt, Reagent ACS, ACROS Organics™

Chemical Name or Material: Methyl Red, sodium salt Name Note: Pure CAS: 845-10-3 Purity Grade: ACS Reagent Grade Molecular Formula: C15H14N3NaO2 Linear Formula: (CH3)2NC6H4N=NC6H4CO2Na Formula Weight: 291.27 MDL Number: MFCD00002426 Synonym: 2-[4-(Dimethylamino)phenylazo]benzoic acid, sodium salt

Cresol Red, Indicator Grade, Pure, ACROS Organics™

Chemical Name or Material: Cresol Red CAS: 1733-12-6 Purity Grade: Pure Molecular Formula: C21H18O5S Formula Weight: 382.42 MDL Number: MFCD00005878

Eosin Y, pure, high purity, biological stain, ACROS Organics™

Chemical Name or Material: Eosin Y Name Note: High purity biological stain CAS: 17372-87-1 Purity Grade: Pure Molecular Formula: C20H6Br4Na2O5 Formula Weight: 691.85 MDL Number: MFCD00005040 Synonym: 2', 4', 5'

Phenol Red Indicator Solution, 0.02% w/v Products for Science Education

Chemical Name or Material: Phenol Red Indicator Solution, 0.02% w/v CAS: 34487-61-1 Assay Percent Range: 97 to 100% Linear Formula: C19H13NaO5S Formula Weight: 376.36 Synonym: Phenolsulfonephthalein Sodium Salt

Direct Red 80

Chemical Name or Material: Direct Red 80 CAS: 2610-10-8 Molecular Formula: C45H32N10O21S6 Formula Weight: 1373.09 MDL Number: MFCD00054389

Eosin B, Certified, Pure, ACROS Organics™ Available on GSA/VA Contract for Federal Government customers only.

Chemical Name or Material: Eosin B Name Note: Pure CAS: 548-24-3 Purity Grade: Pure Molecular Formula: C20H6Br2N2Na2O9 Formula Weight: 624.06 MDL Number: MFCD00005041 Synonym: 4', 5'-Dibromo-2', 7'-dinitrofluorescein

Phenolphthalein, ACS

Chemical Name or Material: Phenolphthalein CAS: 77-09-8 Name Note: For analysis ACS Purity Grade: ACS Grade Molecular Formula: C20H14O4 Formula Weight: 318.33 MDL Number: MFCD00005913 Beilstein: 284423 Merck Index: 14,7243

Nuclear Fast Red, 94%, pure, ACROS Organics™

Chemical Name or Material: Nuclear Fast Red CAS: 6409-77-4 CAS Min %: 92.0 CAS Max %: 100.0 Purity Grade: Pure Assay Percent Range: 94% Molecular Formula: C14H8NNaO7S Formula Weight: 357.26 MDL Number: MFCD00078493 Synonym: C.I. 60760

Phenol Red, Water Soluble, Indicator, ACROS Organics™

Chemical Name or Material: Phenol Red, sodium salt CAS: 34487-61-1 Purity Grade: Pure Molecular Formula: C19H13NaO5S Formula Weight: 376.35

Methyl Red, ACS reagent, ACROS Organics™

Chemical Name or Material: Methyl Red Name Note: Pure CAS: 493-52-7 Purity Grade: ACS Reagent Grade Molecular Formula: C15H15N3O2 Linear Formula: (CH3)2NC6H4N=NC6H4CO2H Formula Weight: 269.3 MDL Number: MFCD00002425 Synonym: 2-[4-(Dimethylamino)phenylazo]benzoic acid

Methyl Red Indicator Solution, 0.02% Products for Science Education

Chemical Name or Material: Methyl Red Indicator Solution, 0.02% CAS: 845-10-3 Linear Formula: C15H14N3O2Na Formula Weight: 291.28 Synonym: Methyl Red In Alcohol

Bromophenol Red, pure, ACROS Organics™

Chemical Name or Material: Bromophenol Red CAS: 2800-80-8 Purity Grade: Pure Molecular Formula: C19H12Br2O5S Formula Weight: 512.19 MDL Number: MFCD00023014 Synonym: 5', 5''-Dibromophenolsulfonphthalein

Phenol Red, Sodium Salt (Certified ACS), Fisher Chemical

Chemical Name or Material: Phenol Red, Sodium Salt CAS: 34487-61-1 Purity Grade: Certified ACS Grade Molecular Formula: C19H13NaO5S Linear Formula: C6H4SO2OC(C6H4-4-OH)(C6H4-4-ONa) Formula Weight: 376.37 MDL Number: MFCD00066901 Synonym: Phenolsulfonephthalein Sodium Salt

Methyl Red Indicator Products for Science Education

Chemical Name or Material: Methyl Red Indicator CAS: 845-10-3 Linear Formula: C15H14N3O2Na Formula Weight: 291.28 Synonym: Methyl Red In Alcohol

Methyl Red hydrochloride, ACS reagent, ACROS Organics™

Chemical Name or Material: Methyl Red hydrochloride CAS: 63451-28-5 Purity Grade: ACS Reagent Grade Molecular Formula: C15H15N3O2·HCl Linear Formula: (CH3)2NC6H4NNC6H4COOH·HCl Formula Weight: 305.76 MDL Number: MFCD00012614 Synonym: 2-[4-(Dimethylamino)phenylazo]benzoic acid hydrochloride

Eosin Y, 1% Solution in Water, ACROS Organics™

Chemical Name or Material: Eosin Y CAS: 17372-87-1 Molecular Formula: C20H6Br4Na2O5 Formula Weight: 691.85 MDL Number: MFCD00005040 Synonym: 2', 4', 5'

Methyl Red, Free Acid (Certified), Fisher Chemical

Chemical Name or Material: Methyl Red, Free Acid CAS: 493-52-7 Purity Grade: Certified Grade Molecular Formula: C15H15N3O2 Linear Formula: 4-(CH3)2N-C6H4-N:N-2-(CO2H)C6H4 Formula Weight: 269.3 MDL Number: MFCD00002425 Synonym: Acid Red 2

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